GST8903
Intelligent Graphic Repeater Panel
Installation and Operation Manual
The Intelligent Solution
Page 7
VII Troubleshooting
Common problems and solutions are shown in the table.
No.
Fault indication
Possible Cause
Solution
1
No indication
on the panel or
incorrect indication
after power-up.
a. Power supply is in bad
condition.
b. Loose connection with the
display board.
c. LED is in bad condition
d. The main CPU is damaged
a. Check the 24V power
supply
b. Check the cable
c. Replace the LED
d. Replace the main CPU
2 The machine can’t
start up.
a. No 5V
a. Check the 3M03 and
its peripheral circuit.
3 Report memory fault
after power-up
a. Some 24LC04B data are
wrong.
b. 24LC04B
is
damaged.
c. No jumper inserted into X1
a. Write the 24LC04B
again.
b. Replace the 24LC04B.
c. Insert the jumper.
4 The
fire
alarm
control panel can’t
register
a. A, B communication cable is
not well connected
b. The power supply is not well
connected.
c. The transformer secondary
coil is not well soldered.
d. 75176, optocoupler and other
nearby components are
damaged.
a. Connect it in a right
way.
b. Connect it in a right
way.
c. Solder
again.
d. Replace the damaged
parts.
5 No sound
a. Triode VT2 and its peripheral
components are damaged.
b. Buzzer is damaged.
a. Replace
the
damaged
components.
b. Replace the buzzer.
6 Can’t register all
mainboards (with
multi-mainboards)
a. Ribbon cable between Pin 1 of
mainboards haven’t been cut
b. Consult No.4 item
a. Cut the Ribbon cables
between Pin 1 of
mainboards
VIII Cautions
1. Before powering up, check all cable problems, such as short circuit, open circuit
and wrong connections etc.
2. This panel is precise electronic product and must be maintained by specific
personnel.
3. Make record on duty.
4. We take the responsibility of repairing the repeater. Any problem occurs, please
contact us in time. The users will be responsible for any result they made by repairing
themselves.
E-MAIL: [email protected]
